Believer

The song's harmonic identity is defined by its refusal to use the standard 'pop' i-VI-III-VII progression. By utilizing a major V chord (F) instead of a minor v (Fm) or a bVII (Ab), it leans into classical functional harmony (specifically the harmonic minor scale). This creates a sharper sense of tension and release. The movement from the flat-VI (Gb) to the V (F) is a hallmark of flamenco and heavy rock, contributing to the song's aggressive and 'believing' tone of perseverance through pain.

The song was written by lead singer Dan Reynolds as a reflection on his personal struggles with Ankylosing Spondylitis (a chronic inflammatory condition) and his history with clinical depression. It explores the concept that pain is a catalyst for growth and artistic expression, moving away from the darker themes of their previous album, 'Smoke + Mirrors'.

Released as the lead single from 'Evolve', 'Believer' signaled Imagine Dragons' transition from dark introspection to a more rhythmic, vibrant sound. The track blends heavy percussion with soulful rock vocals, securing its place as a definitive stadium-rock staple of the late 2010s.